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Characterization of anthropogenic organic aerosols by TOF-ACSM with the new capture vaporizer
Zheng, Yan1; Cheng, Xi1; Liao, Keren1; Li, Yaowei1,7; Li, Yongjie2; Hu, Weiwei5; Liu, Ying1; Zhu, Tong1; Chen, Shiyi1; Zeng, Limin1; Worsnop, Douglas6; Chen, Qi1; Huang, Ru-Jin3,4
通讯作者Chen, Qi(qichenpku@pku.edu.cn)
2020-05-18
发表期刊ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
卷号13期号:5页码:2457-2472
摘要A new capture vaporizer (CV) has been developed and used recently in the Aerodyne aerosol mass spectrometer (AMS) and aerosol chemical speciation monitor (ACSM) instead of the standard vaporizer (SV) to reduce the particle bounce. It is important to characterize the CV performance in different environments. In this study, we characterized specific organic aerosols (OAs) from vehicle, cooking, biomass burning, and coal burning emissions by a time-offlight ACSM (TOF-ACSM) with the CV. Their corresponding marker ions that have been defined in the previous SV-based analysis are still valid in the CV mass spectra. Spectra of OAs from cooking and vehicle exhaust show similarities in distinct alkyl fragments but different ratios of m/z 55 and 57. Ions related to polycyclic aromatic hydrocarbons are present in the OA spectra obtained from burning lignite and bituminous coal but not in the spectra obtained from burning anthracite. Although the relative intensities of m/z 60 and 73 are much lower in the CV spectra than in the SV spectra for biomass burning OA, they are still relatively greater compared with the spectra for other sources. Our data suggest an atmospheric background of f(60) of below 0.03 % for CV. Moreover, we deployed the CV TOF-ACSM along with a SV AMS in urban Beijing during the winter of 2017 to characterize ambient OA with strong anthropogenic influences. The CV TOF-ACSM shows a collection efficiency (CE) of about unity. The CV and SV data show consistent mass concentrations of sulfate, nitrate, ammonium, and OA. Six OA factors are identified by the positive matrix factorization (PMF) analysis for both the CV and the SV data. The SV and CV PMF factors show good correlations in mass concentrations. The SV and CV factors related to coal combustion and cooking differ significantly in loadings, explained by the PMF uncertainty and the lack of understanding of the relative ionization efficiency and CE for primary OA. The CV factors related to secondary sources show greater loadings than the SV factors, which may be associated with the changes in signal-to-noise ratios of various ions in the PMF analysis. Our results support improved mass quantification and useful source identification by the CV for ambient particles in the polluted urban environment. The difference in factor loadings between SV and CV should be considered when interpreting or comparing the PMF results among studies.
DOI10.5194/amt-13-2457-2020
关键词[WOS]CHEMICAL SPECIATION MONITOR ; MASS SPECTROMETERS AMS ; POLYCYCLIC AROMATIC-HYDROCARBONS ; POSITIVE MATRIX FACTORIZATION ; NEW-YORK-CITY ; HIGH-RESOLUTION ; COLLECTION EFFICIENCIES ; SOURCE APPORTIONMENT ; SUBMICRON AEROSOLS ; PARTICLE-PHASE
收录类别SCI ; SCI
语种英语
资助项目National Natural Science Foundation of China[91544107] ; National Natural Science Foundation of China[41875165] ; National Natural Science Foundation of China[51861135102]
WOS研究方向Meteorology & Atmospheric Sciences
项目资助者National Natural Science Foundation of China
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000535284300001
出版者COPERNICUS GESELLSCHAFT MBH
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/14785
专题粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Chen, Qi
作者单位1.Peking Univ, Coll Environm Sci & Engn, Beijing Innovat Ctr Engn Sci & Adv Technol, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China
2.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa, Macao, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Peoples R China
5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China
6.Aerodyne Res Inc, Billerica, MA 01821 USA
7.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
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GB/T 7714
Zheng, Yan,Cheng, Xi,Liao, Keren,et al. Characterization of anthropogenic organic aerosols by TOF-ACSM with the new capture vaporizer[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2020,13(5):2457-2472.
APA Zheng, Yan.,Cheng, Xi.,Liao, Keren.,Li, Yaowei.,Li, Yongjie.,...&Huang, Ru-Jin.(2020).Characterization of anthropogenic organic aerosols by TOF-ACSM with the new capture vaporizer.ATMOSPHERIC MEASUREMENT TECHNIQUES,13(5),2457-2472.
MLA Zheng, Yan,et al."Characterization of anthropogenic organic aerosols by TOF-ACSM with the new capture vaporizer".ATMOSPHERIC MEASUREMENT TECHNIQUES 13.5(2020):2457-2472.
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